Convert between Unix timestamps and dates
A Unix timestamp is just a count of seconds since January 1, 1970 (UTC) — it's how computers, databases, and APIs quietly track time behind the scenes. The problem is that a number like 1752537600 means nothing to a human until you convert it, and doing that math by hand (accounting for time zones, leap years, and whether the value is in seconds or milliseconds) is tedious and error-prone. This tool exists for the moment you're staring at a log file, a JSON payload, or a database row and need to know exactly what date and time that number represents, or the reverse: turning a date you have in mind into the epoch value your code expects.
The page opens with a live current Unix timestamp that ticks upward in real time, so you always have a correct reference value on hand without looking it up elsewhere. Below that, you can paste in any epoch timestamp and it converts instantly to a readable date and time, or go the other direction by entering a date and getting back the corresponding timestamp. It handles both standard second-based timestamps and millisecond-precision values, which matters because JavaScript's Date.now() and many logging systems use milliseconds while Unix cron and most server tools use seconds — mixing the two up is a classic source of off-by-1000x bugs.
Because the conversion runs entirely in your browser, nothing you paste in — timestamps, dates, or anything else — is sent to a server, which makes it safe to use with values pulled from private logs or internal systems. A practical habit: if a timestamp you're converting looks wildly wrong (like landing in the year 1970 or 50000+), you're probably reading a millisecond value as seconds or vice versa — check the digit count first, since ten digits is typically seconds and thirteen digits is typically milliseconds.
Convert between Unix epoch timestamps and human-readable dates directly in your browser.
View the current Unix timestamp updating live at the top of the page for a quick, always-accurate reference.
Enter the epoch value you want to decode into the input field, whether it's in seconds or milliseconds.
The tool instantly displays the corresponding human-readable date and time — no button click or page reload needed.
Switch direction by entering a specific date and time to get its Unix timestamp back.
Choose between second-based and millisecond-based output depending on what your code or system expects.